Elephant ivory is the most versatile material among bones. The tusk is big
and massive and suitable in shape for bigger objects, whereas the ivory of
the hippopotamus is in general smaller and is therefore not always suitable.
Ivory is a relatively soft material.

choosing a material

elephant ivory

other animal bone

hippopotamus ivory

hard outer layer must be removed

only fresh, uncooked bones can be used

it is in general harder than elephant ivory and has
a markedly curved shape; there is also a hard enamel, which must be
removed